X0306 4 2017-01-31 0 0001284812 COHEN & STEERS INC CNS 0001299637 Harvey Joseph M 280 PARK AVE, 10TH FLOOR NEW YORK NY 10017 0 1 0 0 President Common Stock 2017-01-31 4 A 0 64505 0.00 A 1385761 D Common Stock 2017-01-31 4 F 0 24640 34.45 D 1361121 D Includes 44,991 restricted stock units ("RSUs") granted by the issuer to the reporting person, which represents the portion of the reporting person's 2016 annual incentive performance bonus that was mandatorily deferred by the issuer pursuant to the issuer's Mandatory Stock Bonus Program. Also includes 19,514 RSUs granted by the issuer to the reporting person. Any dividends paid on the issuer's common stock are paid in additional RSUs (the "dividend RSUs"). The RSUs vest ratably over four years, and the dividend RSUs vest on the fourth anniversary of the grant date of the RSUs. Represents the withholding by the issuer of shares of common stock in connection with the reporting person's tax obligations upon the vesting of previously reported RSUs and delivery of the common stock underlying such RSUs. /s/ Francis C. Poli, Attorney-in-Fact 2017-02-02